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BaseRepresentation
bin1100001011111…
…00000110101001
321010100022202101
412011330012221
5202132021301
614050533401
72350600036
oct605740651
9233308671
10102220201
1152778606
122a297261
1318240235
14d80c38d
158e92701
hex617c1a9

102220201 has 8 divisors (see below), whose sum is σ = 110008584. Its totient is φ = 94629120.

The previous prime is 102220193. The next prime is 102220207. The reversal of 102220201 is 102022201.

It can be written as a sum of positive squares in 4 ways, for example, as 230400 + 101989801 = 480^2 + 10099^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102220201 - 23 = 102220193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102220207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48250 + ... + 50323.

It is an arithmetic number, because the mean of its divisors is an integer number (13751073).

Almost surely, 2102220201 is an apocalyptic number.

It is an amenable number.

102220201 is a deficient number, since it is larger than the sum of its proper divisors (7788383).

102220201 is an equidigital number, since it uses as much as digits as its factorization.

102220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98651.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 102220201 is about 10110.4006349897. The cubic root of 102220201 is about 467.5688571401.

Adding to 102220201 its reverse (102022201), we get a palindrome (204242402).

The spelling of 102220201 in words is "one hundred two million, two hundred twenty thousand, two hundred one".